Steam pump



(No Model.)

' 2 Sheets-Sheet 1. I J. E. SINCLAIR. DIRECT ACTING STEAM PUMP.

No. 279,452. Patented June 12,1883.

IN'VENTOR: W W g ATTORNEYS.

(No Model.) 2 Sheets-Sheet 2. J. E. SINCLAIR.

DIRECT ACTING STEAM PUMP. No. 279,452. Patented June 12,1883.

WITNESSES: 6 dI/NVENTOB: g; ILL i ATTORNEYS.

UNITED STATES PATENT 7 OFFICE.

JAMES SINCLAIR, or BALTIMORE COUNTY, MARYLAND.

DI RECT-ACTING STEAM-PUMP.

SPECIFICATION forming part of Letters Patent No. 279,452, dated June 12, 1883.

Application filed January 2!), 1883. (No model.)

To all whom it may concern.-

Be it known that I, JAMEs E. SINCLAIR, of Baltimore county, State of Maryland, have invented a new and useful Improvement in Direct-Acting Steam-Pumps; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to theaccompanying drawings, forming part of this specification, in whic Figure 1 is a longitudinal section taken through the center, and Fig. 2 is an end view.

My invention relates toan improved direct acting steam-pump in which the water and steam cylinders are arranged both within the same case. i

It consists in an outer cylindrical case l1aving a central ring containing steamports and packing-ring, combined with a shell of smaller diameter arranged concentrically therein, and provided with open ends and a valve, and having at its ends flanges that form annular piston-heads, which fit with a tight slidingjoint in the outer cylinder, by which construction steam admitted to the annular spaces between its valve to cause a flow the inner shell and outer case or cylinder, al-

ternately on opposite sides of the central ring,

causes the inner shell to reciprocate, and by of water straight through the center.

The invention also consists in the peculiar side of the reciprocating shell Eand one end construction and arrangement of parts, as will be hereinafter more fully described.

In the drawings, A A represent the two sections of the outer case or cylinder, which are provided at their outer ends with flanges a a and at their inner ends with flanges .b b. The outer flanges, a a, are bolted to tapering end couplings, B 13, while the inner flanges, b b, are bolted to the middle ring, O. This ring 0 is formed with steam-ports c '0, and has mounted above the same a val "e and val vebox, D, of a well-known form. The inner periphery of this ring projects a short distance inwardly beyond the outer cylinder, and is formed with a circular recess, within which are contained packing-ri n gs d, which may be ti ghtened against their bearing by a set-screw, e, and spiral springf, located in arecess orhole in the ring 0.

E is the internal reciprocating shell, whose outer periphery fits the inner periphery of the packing-rings. This shell has at each end, upon opposite sides of the central ring 0, a pistonhead, which fills the annular space between the shell E and outer case, which heads are com posed of a plain ring, g, a T-shaped flanged ring, 71, and packing-rings Z, which rings 9 and h are screw-threaded upon their inner peripheries and fitted upon screw-threads on the ends of the shell. Inside the reciprocating shell E is arranged a valve, F, opening to the left, and in the coupling B, at the end of the case, is another valve, G, opening to the left. These valves, as shown, are composed of a sleeve with a ta )ering elastic collapsible tube formed of soft rubber, canvas, or any other flexible material, arranged as shown, so that when moved to the right it opens and the water passes through it, and when moved tothe left the tube collapses, and, on closing, acts to force the water in front of it. This particular form of valve I have made the subject-matter ofa separate application, and it need not be here further described, since any other form of valve may take its place in this pump with-' out departing from my invention.

To keep the grit of the water from getting between the piston and the inner surface of the outer cylinder, and thus wearing the joint loose, I employ flexible tubes H, of canvas, rubber, or other suitable material-one 011 each of each of which tubes is fastened to the end of the shell by a clamping-ring, 1', and the other ends of which tubes are fastened in the contracted ends of the couplings B B. To reenforce these tubes and prevent them from bursting, and cause them also to fold into even corrugations, as shown on the right-hand side,

rings are placed around the same at proper distances apart.

To one ofthe annular piston-heads are secured two piston-rods, I I, which pass through stuffing-boires in the end coupling, B, and ,transmit the reciprocating" motion of the shell to the crank-shaft, (not shown,) which crankshaft is fitted with the usual governor and valve-gear for operating the valverod J.

The operation of my pumping-engine is as follows: Steam being admitted to and exhausted from the annular steam-chamber, on opposite sides of the middle ring, 0, the shell IOO E is caused to reciprocate in the outer cylinder, and the valve in this shell, when moving in one direction, (to the right,) allows the water to pass through it; but when moved in the other direction it closes and forces the water on the left through the valve in the coupling B, thus causing the stream of water to flow directly through the center of the pump.

In making use of my invention I do not confine myself to the use of steam, as compressed air may be employed for operating thepump in mines; or any other gaseous medium may furnish the motive power.

To prevent condensation of steam an asbestus or other non-conducting lining may be placed in the walls of the inner shell, between the water and steam space.

Having thus described my invention, what I claim as new is 1.. A direct-acti 11g pump consisting of a 'cylinder having a middle ring, 0, with ports, as described, combined with a reciprocating shell arranged within the cylinder, and having annular heads on opposite sides of the ring, and a valve arranged in said shell, substantially as and for the purpose described.

2. The outer cylinder having amiddle ring,

0, with ports therein, combined with-a shell,

E, fitted in said ring, and having annular heads upon opposite sides of the ring fitting the cylinder, a valve arranged with said shell, and the flexible tube H, connecting the shell to the inlet and outlet of the outer case, as shown and described.

3. The combination of the cylindersections A A, with flanges a and I), the ring 0, with ports 0 c and packing-ring (I, the shell E, with inner valve and annular heads 1 h I, the contracted end couplings, B B, and the flexible tubes H, substantially as shown and described.

4. The combination, with the shell E, having eXterioily-threaded ends, of the plain ring 9, Tshaped ring 71, and packing-rings I, the rings 9 and 71 being screw-threaded interiorly, as described.

5. An engine having two outer cylinder-sections, A. A, and a detachable ring, C, forming the heads to said cylinder-section, and formed with ports, as described.

' JAMES EDXVARD SINCLAIR. lVitnesses:

XVM. G. DEAL,

FREDERICK (l. DREYER. 

